GAA18CA256

NTSB accident investigation · Cessna A185 · Chandler, AZ · May 5, 2018

Accident · No injuriesData collectionFinal report
Date
May 5, 2018, 11:05 local (18:05 UTC)
Place
Chandler, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N76SCCessna A185
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report October 24, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180505004699A
Case key
97185

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s failure to maintain directional control during landing in gusting tailwind conditions.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna A185F: 71 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna A185F: 56 casesAll aircraft: 3,958 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna A185F: 14 casesAll aircraft: 1,199 cases
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna A185F: 5 casesAll aircraft: 594 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot of the tailwheel-equipped airplane reported that, during final approach, the airplane required about 10° of crab to the right to maintain alignment with the runway. During the landing flare, he reduced power to idle, slowly applied rudder to align the fuselage with the runway centerline, and added right aileron to counter the crosswind. He added that, during the three-point landing, the airplane bounced. During the landing roll, he had full right aileron countering the wind when a "perceived" gust lifted the right wing. He held full right aileron, full aft yoke, and used the rudder to maintain alignment. Subsequently, about 40 knots groundspeed, the left main landing gear collapsed, and the left wing impacted the runway. The airplane sustained substantial damage to the left wing and aileron. The pilot reported that the left main landing gear detached from the airplane. The automated weather observation system located at the accident airport reported that, about 20 minutes before the accident, the wind was from 110° at 8 knots, gusting to 19 knots. The same observation system reported that, about 10 minutes after the accident, the wind was from 150° at 13 knots, gusting to 21 knots. The pilot landed on runway 4R.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, during final approach, the airplane required about 10 degrees of crab to the right to maintain alignment with the runway. During the landing flare, he reduced power to idle, slowly applied rudder to align the fuselage with the runway centerline, and added right aileron to counter the crosswind. He added that, during the 3-point landing, the airplane bounced. During the landing roll, he had full right aileron countering the wind when a "perceived" gust lifted the right wing. He held full right aileron, full aft yoke, and used the rudder to maintain alignment. Subsequently, about 40 knots groundspeed, the left main landing gear collapsed, and the left wing impacted the runway. The airplane sustained substantial damage to the left wing and aileron. The pilot reported that the left main landing gear detached from the airplane. The Federal Aviation Administration inspector reported that, the airplane had been in an accident in 1990 and repaired in 1995. He added that, the maintenance records show that the left gear and left wing (along with several other items) had been replaced during the 1995 repair. He also reported, the landing gear bolt was bent and the threads on the nut were stripped. The automated weather observation system located at the accident airport reported that, about 20 minutes before the accident, the wind was from 110° at 8 knots, gusting to 19 knots. The same observation system reported that, about 10 minutes after the accident, the wind was from 150° at 13 knots, gusting to 21 knots. The pilot landed on runway 4R.

Aircraft

Registration
N76SC
Reported as
Cessna A185 (F)
Category
Airplane
Serial number
18504206
Built
1981
Airframe hours
5,188.1
Engine
Continental IO-520-D, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 18, 2018
Departed
PSP · Palm Springs, CA
Destination
CHD · Chandler, AZ
Flight plan
VFR
Airport
CHD · Chandler Muni, runway 04R, 4,870 × 75 ft, asphalt
Equipment
Handheld GPS

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
76
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Waiver time limited special
Last flight review
June 15, 2017
Seat
Left
Flight hours
6,250 total · 26 in this make and model · 6,150 as pilot in command · 26 in the last 90 days · 8 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 13 knots, gusting 21
Visibility
10 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 25 °F
Altimeter
29.97 inHg
Observed at
KCHD

Docket · 3

The files NTSB released with the investigation on July 31, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.